This release makes some pretty meaningful improvements to the linker, making it both more efficient (in memory and CPU) and making generated binaries smaller.<p>>The key contributors to better linker performance are a newly redesigned object file format, and a revamping of internal phases to increase concurrency (for example, applying relocations to symbols in parallel). Object files in Go 1.15 are slightly larger than their 1.14 equivalents.
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>These changes are part of a multi-release project to modernize the Go linker, meaning that there will be additional linker improvements expected in future releases.